Gun for applying liquid to dandelions



July 5, 1932.

F. l. JADEN GUN FOR APPLYING LIQUID TO DANDELIONS Filed Oct. 4, 1930 Y mm1- yopening'hev centered over theheart of the Idischarge action :hastaken place.

Patented July 5, 1932 UNI-TED STATES;

PATEN y .JAIJElStl or HASTINGS, Vwerfe-ASMv f GUN'EOR APLYING LIQUID To) terminer.

'Appneaticnfiled october 4,

This `invention-relates to apparatus for discharging liquids on'` plants, insects and the like, but more particularly to be used-inconnection wth`-the destruction ofdandelions.'

The prime'object'ofthe invention is to devise apparatus iin the nature r ofi 'gun which will discharge a poisonous liquid into the heart of the plant so as tonotionly kill the plant but destroy its p'ollenatio'nl orother reproductive medium which is usually 'located Another object is to produce astructu-reV that-can be readily` placed'- over the objec-y tionable plantso that the dischargegnoz'zle'or plant. l

Still another objectfis tov construct a-device thatis: positive in operation .yetfsimpleand efcient andY so constructed that *a1 uniform" f predetermined amount'Y of the liquidv will he" discharged :on th'e-plantwhile using the'leastl numberof movingparts.

Another. object is-to construct-aguny thatLV will prevent leakage of thema-terial after 'the Other objectswill hedisclosed iin' the specilication andclaimsformingpart of this ap-- plication. y i

In the drawing: Y I

Figure l is a-vsideielevati'olrof'theappa;v rat-us5. Y f

Figure 2 is a side elevation` partly in ver2 tical section showingfthe-interior-of the gun before the `gun has received the liquidgf Figure 3 is a vertical section-ofthe` gun'- showing the positionlof the "parts after having received va portion lofthe liquid 'ready for discharge ;V and f l Figure i is a horizontal section ytaken'-on line 4-4 of- Figure 2.4

Referring to the draw-ing in which"like' parts are designated-hy similar-numerals:

Numeral 5 designates a re'servoirjin the for-1n of a-can in' whichthe liquid is usually sage 8 extending through said pistfon 7 is; placed below'the` reservoir`5.- Arecess v9@ is formed at the 5top ofthefpiston 7 'by 11i-leans of a roundthreaded nut`10. The baseportionl v10` of `the nut110'lis secured tothe top2 1930.1 serieu. No', 456,434.

of the piston 7 by'screwthr'eads `11; The top portion of the; nut' 10 hulges to' form;` the1 recess 9 and has onit'sY outer?? surface: sjcre'vs'r"4 threads 1-2 which-are adaptedtofcoaet'with screw threads 18 onethefinner'wal'l of'thew' gun .casing 14. Thus the piston-7 andV the r gun* casing 14' are connecte'fd'togetherf as` an integral part. On the'inside offthreadedfnut 10: are formed threads 15 adapted to" coac't with threads 16 on the usual lillerneckofthe container 5. At the lower end ofthe chan'- nel Sis placed a ball valve'l 18 which isseated'V against a valve seat'19-loy wayoffa'springQO A' hollow plug2l1 is screwedi into the lower end 22 of piston-7 and serves tohold the""$5:L

spring 2O in pla-ee. A valve-seat23is formed in the lower end of thfevplug 21' adapted to' seat a needle valve 24 which* is mounted in a cylinder25r`by way of'a pin 26 which* allows slight play on the part of r theneedle#` valve 24 due to the opening 27 in the needle@ l valveQll which receives the pin 26" heilig slightly over-size rso that liquidV ,can flow' freelyl around the4 needle valve;-r Itisohvious ythat a slotf could he utilizedhfor'thiissaine ff purpose; A-sleeve '28"is slidah'ly'fmounted onV the outside of'the gun' casing-li'andscrews theA guncasinfg! 14 andin turnl the'cylinileri y 25. SlotsBO,H however, are formedirrtheso gunL :casing V111 of suflicient f' size -so that the cylinder 25 may he moved away fron'ithe"`v stationary` piston' 7 a* suiiicient'"distanceE` to forma chamfberl. A handle'32'is secured*AV to the sleeve .28 so'th'atthe samefm'ay'be'VS' moved upiand down; Itis obviofus that upon*- movement ofthe sleeve v'28 the cylinder 25Vr willl be correspondingly moved,' whereas the*v piston7 and theguncasingMfvvillreinain ,t stationary. It -is likewise: obviousthatfthis Uff movement will be limited by the slots 30'.-- The upper portion of cylinder -25 -isadapted to slide on' the V7piston V7 and-is fof*suiicient f length to keep the -samein 'align-inentfl lnlthe lower end V33 of the cyl-inder'25 is'vformed 195 a Idischarge vport Yfill/in which" isf-positioned* a ball valve @mindspring-36, tlieysameheing held in posit-ionibya/hollow pl-ug 37 which is'- i screw threaded at138'#to'theicylinder''25.` U Feet `39 are formedy atl-the bottorof 'the gunL 100 Iio casing 14, the same being of such height that the plug 37, through which the liquid is discharged, will be closely adjacent the ground when the apparatus is in discharge position. A coil spring 40 is placed around the gun casing 14 between the feet 39 and the sleeve 28, so that upon the downward movement of the sleeve, the spring will be compressed and cause the return movement of the sleeve 28, when the handle 32 is being released. The feet 39 are screw threaded to the gun casing 14 so that the tension of the spring 40 may be adjusted by means of the feet 39. A filler cap 41 is placed in the top of the can or reservoir 5, and it has been found advantageous to place therein a screen 42 to prevent any foreign substancesfrom entering the gun during the dispensing operation. A gasket 43 may be placed between the nut 10 and the filler neck to prevent any leakage.

As actually used, a can 5 of the usual construction containing the liquid to be dispensed is placed in the top of the gun 6, the

cap being first removed and the can 5 screwed into place in the gun. The Oun is then placed overthe head of the dandelion or other plant to.` be destroyed and the handle 32 pressed downward, giving it the movement of per-V `,haps one-half to three-fourths of an inch.

Since the handle'is secured to the sleeve 28 which in turn is secured to the cylinder 25 by way of screws 29,*the cylinder will movedownwardly, to form a chamber 31. Since the channel y8 vis filled with the liquid, the sudden forming of the chamber 31 will change the pressure on the under side of the valve and cause the ball valve 18 to be un seated and causethe chamber 31 to be filled with the liquid. -Upon the release of the handle 32, the cylinder 25 will be forced back intoY position by the coil spring 40 which is compressed-during the downward movement. Thispressure serves to closel the ball valve 18 and since the liquid will seek the path of least resistance, the ball valve 35 will be unseated and allow the liquid to be dispensed `onto the dandelion or other plant during the return of the cylinder 25. Upon the return of the cylinder 25 to its initial position, the needle valve 24 will seat itself in its seat 23. The lower end of the needle valve 24 is slotted so that the liquid can pass freely around that point, and the opening in which it rests also is over-size for the same reason. I also make the needle valve slightly longer than the movement between the: cylinder 25 and the piston 7 so that'there is no danger of displacement of the needle valve 24. It is impossible for the liquid to escape while the gun is'not in action as the needle valve 24 is forced valve 35 if this valve did not seat properly and would Aprobably continue as long as any liquid remained in the passage 8. Due to my needle valve arrangement, and the fact that the liquid is drawn into the cylinder on the down stroke of the handle and is practically all forced out on the return movement of the handle, there will be practically no leakage in my construction.

I have shown the needle valve 24 held in place by pin 26 but it is obvious that this is not necessary as the pin may be entirely done away with, depending upon the needle valve being longer than the movement between tlie cylinder 25 and the piston 7.

It is obvious that there may be changes in this construction without departing from the scope of my invention, and I therefore do not limit myself to the exact construction shown herein but include structures which Y may come within the scope of the claims apmovement o-f said cylinder away from said. piston and at the same time form a chamber for the collection of the material to be dis- Y charged and the closure means in said cylinder adapted to open andV discharge material upon the return movement of said cylinder toward said piston.V

2. A dispenser comprisingy a gun having casing, a cylinder slidably mounted in said casing and having a discharge port therein, a piston having a passage therethrough supported by said casing and adapted'to co-act A with said cylinder, means for closing the passage in said piston, means for closing said discharge port in said cylinder and closure means in said piston adapted to open upon movement of said cylinder away from said piston and at the same time form a chamber for the collection of the material to be discharged, and a Vclosure means in said cylinder adapted to open and discharge material upon `the return movement of said cylinder toward said piston, and other means. for closing the passage in said piston positioned below the first mentioned passage closing means to prevent leakage.

3. A dispenser comprising a gun having casing, a cylinder slidably mountedin said casing and having a discharge port therein, a piston having a passage therethrough supported by said casing and adapted to co-act with said cylinder, means for closing the passage in saidpiston, means for closing said discharge port in said cylinder and closure means in said piston adapted to open upon movement of said cylinder away from said operate said cylinder from said piston.

4. A dispenser com rising a gun having casing, a cylinder sli ably mounted in said casing and having a discharge port therein, a piston having a passage therethrough supported by said casing and adapted to co-aot with said cylinder, means for closing the passage in said piston, means for closing said discharge port in said cylinder, closure means in said piston adapted to open upon movei ment of said cylinder away from said piston and at the same time form a chamber for the collection of the material to be dischar ed, closure means in said cylinder adapte to open and discharge material upon the return movement of said cylinder toward said piston, and manual means adapted to move said cylinder away from said piston, and means for returning said cylinder toward said piston.

5. A dispenser comprising a gun having a casing, a cylinder slidably mounted in said casing having a discharge port therein, a piston having a passage therethrough supported by said casing and adapted to co-act f with said cylinder; closure means for the passage in said piston and discharge port in in said cylinder, a sleeve mounted on the exterior of said casing, said casing having a slot formed therein; means iXedly connecting the sleeve and cylinder together and passing through the slot formed in the casing; means secured to the said sleeve for moving the sleeve and cylinder to and from said piston.

6. A dispenser comprising a gun having a casing, a cylinder slidably mounted in said casing having a discharge port therein, a piston having a passage therethrough supported by said casing and adapted to co-act with said cylinder, closure means for the passage in said piston and discharge port in said cylinder, a sleeve mountd on the eX- terior of said casing, said casing having a slot formed therein; means fiXedly connecting the sleeve and cylinder together and passing through the slot formed in the casing; feet secured to said casing; spring means positioned between said sleeveand said feet; a handle secured to said sleeve adapted to be used in moving the cylinderaway from said piston, the spring means adapted to return the cylinder to its initial position.

7. A dispenser comprising a gun having a casing, a cylinder slidably mounted in said casing having a discharge port therein, a piston having' a passagetherethrough supported casing,V said casing having a slot formed therein. ;l means fXedly @oiliuecting the sleeve and )cylinder together Vand, ypassing through the slot formed in the casing feet adj ustably connected to saidcasing; sprl-ng means positionedibetweengsaid' sleeve and said feet; said adjustable. feet acting as tensioning means for said spring; means secured to said sleeve adapted to move said cylinder away from said piston, the spring means adapted to returnv said cylinder to its initial position.

81A dispenser comprisingV a gun having a casing; a moving part slidably mounted in said casing, having a discharge port therein, a stationary part having a passage therethrough supported by said casing adapted to co-act with said moving part; valve means positioned at the lower end of said passage in said stationary part, said valve means opening in a downward direction; other valve means positioned in the discharge port of said moving part and adapted to open in a downward direction; means adapted to be utilized in moving the moving part away from the stationary part, said parts adapted to form a chamber upon such movement, said first mentioned valve means adapted to open upon such movement and discharge material into said chamber, upon the movement of the moving part toward the stationary part, the irst mentioned valve means is adapted to close and the second mentioned valve means adapted to open and discharge the contents of the chamber through the discharge port of the moving part.

9. A dispenser comprising a gun having a casing, a movable part slidably mounted in said casing having a discharge port therein; a stationary part having a passage therethrough supported by said casing adapted to co-act with said moving part; valve means positioned at the lower end of said passage in said stationary part, said valve means opening in a downward direction; a needle valve positioned in said moving part and having its seat located in said stationary part, the lower portion of said needle valve having passages formed therein, the diameter of the needle valve being less than the bore in which it is seated so that material below the valve seat may escape; a spring valve is positioned in the discharge port in the moving part and is adapted to open downwardly; means secured to the moving part adapted to move the same away from the stationary part and formachamberbetweensaid stationary part and moving part; said valve means in said passage adapted to open uponI such movement and discharge material -into the chamber a formed; means for returning said moving part toits initial position, the spring valve means in the discharge port adapted to open upon this movement and discharge the contents of the chamber, the needle valve in the moving part' adapted to seat itself in its valve seat formed in the stationary part to prevent the escape of any material 1n the passage formed in the stationary part.

In testimony whereof I affix my signature.

l FRED I. JADEN. 

